Elevator



(No Model.) 2 Sheen-Sheet 1.

A. O. NEWTON.

ELEVATOR.

No. 385,722. Patented July 10, 1888.

(No Model.) 2 Sheets-Sheet2 A. O. NEWTON.

ELEVATOR.

No. 385,722. Patented July 10, 1888.

UNITED STATES PATENT OFFICE.

G. NEWTON, OF CRESCENT, NEXV YORK.

ELEVATOR.

SPECIFICATION forming part of LettersPatent No. 385,722, dated July10,1888.

Application filed March 1, 1888.

' To all whom it may concern.-

Be it known that I, ANDREW C. NEWTON, a citizen of the United States,residing at Crescent, in the county of Saratoga and State of New York,have invented certain new and usefutImprovements in Elevators, of whichthe following is a s iecification, reference be iug had therein to theaccompanying drawings.

This invention has relation to freight-elevators, and is especiallydesigned for use in raising and lowering brick from and into the hullsof vessels and for use in kilns for lowering or raising brick after theyare dried.

The objects and advantages of the invention will hereinafter appear,andthe novel features be particularly pointed out in the claims.

Referring to the drawings, Figure 1 isa front elevation of an elevatorconstructed in accordance with my invention. Fig. 2 is a transversesection on the line :0 as of Fig. 1. Fig. 3 is a side elevation; Fig. 4,a plan of the same, and Fig. 5 is an enlarged detail of the cleva--tor-operating mechanism.

Similar numerals indicate the figures of the drawings.

1 represents the base of the framework, which, for the purpose ofstability, is rectangular. From two of the opposite corners of the base1, and intermediate the corners of the like parts in all opposite sideof the base, are uprights 2, there i being three in number, and forming,when joined at the top by tie-bars 3, a triangle.

Upon theouter face of ea'ch'of the uprights 2, and near their lowerends, is secured a bracket, 4, in which is adapted to slide the spindleof a caster, 5. Mounted above the bracket 4 in ears 6, secured to theuprights 2, is a pivotal cam-lever, 7, which, when thrown in ahorizontal position, forces the casters below the surface of the base 1,thus raising said base and permitting the elevator to be rolled uponsaid casters from one point to another. \Vh'en the elevator has reachedits destination, the levels 7 are swung to a vertical posit-ion and thebase of the elevator lowered to the ground. I

Secured to the sides of the uprights 2, and extending inwardly, areguide-plates 8, III

Serial No. 165,766. (No model.)

which are mounted theelevator-cars 9 and 10. The cars 9 and 10 aresupported at their two diagonal corners, (see Fig. 2,) and consist ofthe usual platform, 11, the sides 12, and the cross-bar13. At the top ofthe crossbar 13 there are mounted and project laterally slotted castings14, which embrace vertical guides 8. The platform 11 of the car is alsonotched to embrace the vertical beams or uprights 2. so that said car isheld in a vertical position for movement within said guides. At the0pposite side of the frame-work is mounted the car 10. .This carcomprises in its make-upt-he side pieces, 12; but in lieu of the tie-bar13 (shown in the car 9) a Windlass, 15, connects said side pieces attheir top or upper ends.

This Windlass is provided with a ratchet, 16, into which is adapted totake a gravity-pawl, 17, and is .also provided with a lever, 18, bywhich it may be rotated and held in a desired position by the ratchetand pawl.

Mounted upon the tie-bars 3, at thetop' 0f the frame-work of thee1evator,are crossbeams 19, which are ranged opposite each other andprovided with bearin s, in which are mounted ordinary pulleys orsneaves, 20. Intermediate the sheaves 20 is an elevated bearing, 21, inwhich is mounted a drum, 22.

Connected to the cross bar 13 of the elevator-carat; is a cable, rope,orsprocketchai 11,23, which passes up over one of the pulleys 20, iscoiled around the drum 22 two or three times, and'thence down over theopposite pulley 20, and wound around the Windla s 15 of the oppositecar, 10. A bail, 2%, formed of wire, is mounted loosely upon theWindlass 15, and is formed with an eye, through which the cable 22passes, and is guided to its proper position upon said windlass, thatwill be hereinafter described.

, At one end of the cross-beams 19 is located in suitable bearings apulley or sheave, 25. In a frame-work, 26, secured to the upright 2 andto the base 1, is journaled a Windlass, 27, having an operating-crank,28, located at a suitable distance from the ground. The windlass may beeither in-the form of a sprocket, as shown, or have simply a plainsurface, as is usual in such cases.

29 represents an endless sprocket-chain, ca-

ble, or rope, which passes around the drum and sprocket-wheel 27, overthe pulley 25, and around the drum 22, which, if desired, may also beprovided with or formed as a sprocket, whereby a positive rotationthereof through the medium of said chain 29 and Windlass 27 is assured.The pulley 25 is what may be termed a twin pulley, to accommodate theendless chain 29, so that while one section of the pulley is working inone direction its companion is working in an opposite direction.

Mounted upon the shaft of the drum 22, and at one side thereof, is abrake wheel or pulley, 30, over which passes a brake-strap, 31, the endsof which are secured to a pivoted brakelever, 34, from which depend anoperatingrod, 35, which is within easy reach of the operator standing inposition at the operatingcrank 28.

Taking, for example, the operation of lowering brick within a kiln, wewill suppose that a wheelbarrow of brick is rolled upon the car 9, andan empty barrow is rolled upon the car 10. The Weight of the brick willbe sufficient to lower the car 9 and raise the car 10, through themedium of the cable 23, the lowering motion being regulated by theoperator through the medium of the brake-operating rod 35. The operationis repeated until the pile of brick is diminished to such an extent asisdesired. As the pile grows less, it becomes necessary-to have the earsautomatically stopped at a point convenient 'to the height of the pile.Now, by making the cable 23 longer, which is done through the medium ofthe windlass 15, the bottom of one car may be made to reach the base atsuch a time when the bottom of the opposite car is at the desired point,inasmuch as when taking, for instance, the car 10, which we will supposeto be loaded, reaches the bottom or base 1, no further pull or weight isexerted upon the cable 23, and the upward motion of the car 9 isconsequently stopped. To permit the cars to go the full height of theframe-work, the cable 23 is wound upon the Windlass 15 the desirednumber of times. Secured to the outer sides of the two opposite beams,2, and pivotally connected thereto, are brackets 32, which may be swungup out of position against said uprights or down into position, as shownin Fig. 3. A board, 33, is laid transversely across these brackets andserves as a rest or support for one end of any ordinary plank or gangwayleading from the brick'pile over which the bricks are carried.

In Fig. 5 and also in Fig. 4 I have shown mechanism for operating theelevator, and it ditfers from that before described in that the sprocketor drum 27 is mounted upon a crankshaft, 36, to the cranks of which areconnected pivotal rods 37 38. The rod 37 is pivoted to an arm, 38, uponthe outer end of which is mounted a seat, 39, for the operator,

which is adapted to take a double-toothed pawl, 42, pivoted to avertical arm,43, mounted on the frame work 26. A spring, 44, connectedto the pawl 42 intermediate its pivot and working ends serves to retainthe pawl in mesh with the ratchet-whcel. By the pivoting of the pawl 42the same may be reversed to engage with the ratchet-wheel at either sideof the arm 44, thus adapting it either for raising brick from the holdof a vessel or from a kiln. The two cranks on the shaft 36 are set atabout a quarter of a revolution apart, as are also the two end cranks28, so that the weight of the operator serves to revolve the drumone-fourth around, his foot upon the treadle the second fourth, his handthe third fourth, and his remaining hand conipletes the revolution, thusavoiding dead-centers. Although I have described these means ofoperation to facilitate operating the elevator-cars, yet I do notconfine my invention in this respect, but hold that various other meansmay be employed to accomplish the same results.

Having described my invention, what I claim 1s 1. In an elevator, thecombination of a threecornered frame work, with an elevator car mountedtherein and having bearing in said frame-work at opposite diagonalcorners of the car, substantially as specified.

2. 'In an elevator, the combination of a threecornered or triangularframe-work,with a pair of elevator-cars mounted therein and takingbearing at diagonally-opposite corners, substantially as specified.

3. In an elevator, the combination, with the frame -work thereof, of apair of elevator-cars mounted for movement therein, a cable connectingthe cars and passing over a drum mounted on the frame-work, and an end,-less cable orchain passing over the drum,and a Windlass for operatingthe same, substantially as specified.

4. In an elevator, the combination of the frame-work provided with twoelevator-cars connected by a cable, a drum arranged upon the frame-workover which said cable passes, an endless belt or cable for operating thedrum, and a Windlass or pulley having an operatingcrank for operatingthe cable, substantially as specified.

-5. The combination, with the base 1, having the uprights 2, arranged intriangular form, arranged as described, and the tie-bars 3, of the drum22, pulleys 20, all mounted in the cross-pieces 19, the cable 23, theendless belt 29, for operating the drum,

connected by and the Windlass 27, for operating the belt, substantiallyas specified. specified.

6. In an elevator, the combination of the In testimony whereof Iaffix mysignatnlre'in frame-work 26, the crank-shaft 36, having the presence oftwo witnesses. 5 drum 27, operating-cranks 28, ratchetwheel with thepivoted treadle 40,.substant-ially as [3 41, and pawl 42, mounted on thearm 43, and AEDREW NEW having the spring 44,with the connecting-rodsWitnesses: 37 and 36, the former connected with thelever G. A.\VALDR'QN,

38,-having seat '39, and the latter connected JOHN HIGGINS.

